Valve.



N. WHITE VALVE.

APPLIUATION FILED FBB.26,1904.

PATENTED MAY-30 1905.

UNITED STATES Patented May 30,1965

PATENT O FIcE.

NAPOLEON WHITE, OF ALIQUIPPA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO HENRY R. WINKLE, OF ALIQUIPPA, PENNSYLVANIA.

VALVE.

SPECIFICATION forming part of Letters Patent No. 791,434, dated May 30, 1905.

Application filed February 26, 1904. Serial No. 195,353.

To It whom it may concern.-

Be it known that I, NAPOLEON WHITE, a citizen of the United States of America, residing at Aliquippa, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Valves, of which the following isa specification, reference being had therein to the accompanying drawings.

This invention has relation to valves, and

relates in particular to drainage-valves for oil-receptacles.

The object of this invention is to provide a valve which will automatically open and allow a heavy liquid. such as water, to flow freely from a receptacle and will automatically close when a lighter liquid, such as oil, follows the flow of water and starts to pass through the valve.

My invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

In the drawings, Figure 1 is a vertical sectional view of an oil-receptacle, showing my improved valve in position on the drainagepipe leading from said receptacle. Fig. 2 is a top plan view of my improved valve. Fig. 3 is a vertical sectional view of the same. Fig. 4 is a detail elevation of part of the valve. Fig. 5 is a top plan View of another part of the same.

The valve-casing 1 is formed with a screwthreaded inlet 2, a screw-threaded outlet 3, and. an intervening partition 4, in which is formed a valve-seat 5. The valve proper, 6, is a buoyant hollow body of light sheet metal and has a hollow vertical stem 7, which projects through a bushing 8, screwing into the body of the valve-casing 1, and the stem 7 is formed with longitudinally-disposed ribs 9, which sustain the stem 7 centrally of and guide it in the bushing 8. The body 6 of the valve is preferably double-cone shaped, its lower end 10 being inwardly tapered, so as to fit the valve-seat 5, and the stem being hollow and communicating with the body 6. The in terior of the body is therefore in communication with the outer air. The valve-stem is intended to slide freely in the bushing 8, and

the ribs, therefore, should bear lightly upon the inside of the bushing, so as to not produce too much friction. Upon top of the bushing 8 is screwed a cap 11, formed with a central opening for the passage of the valve-stem,

and said cap is formed with a vertical standard 12, having a bifurcated upper end formed with screw-threaded holes which receive pivotscrews 13 13, between the ends of which is secured a lever 14, the pivot-screws ,13 constituting the fulcrum of the lever. A bracket 15, which has a vertical slot 16, is formed integral with the cap 11, and the lever 14 passes through the slot 16 and extends some distance beyond the bracket 15. The outer end of the lever 14 is notched and the notches numbered in the manner of a scale, and a movable weight 17 is hung upon the notched end of the lever by means of a link 18. The upper end of the valve-stem is formed with lugs 19, through which are screwed pivot-screws 20, that fit into sockets in the sides of the lever 14 and serve to attach the valve-stem to the lever in such manner that the lever and valve can be inoved without appreciable friction between the connecting parts. A scale 21 is marked on the outside of the bracket 15, adjacent slot 16, and a pointer 22 on the lever 14 indicates on the scale the movements of the lever. The valve constructed and arranged as above de-.

scribed is applied to a drainage-pipe 23, leading to the bottom of the tank or other receptacle 24, a globe-valve 25 of ordinary character being interposed between my improved valve and the tank or receptacle 24, so as to entirely shut oif theflow of liquid from the tank when desired. The tank is shown as being partly filled with oil and with a quantity of water at the bottom of the same, and in operation the globe-valve 25 being opened the water will flow out through pipe 23, passing freely through my improved valve, the weight 17 being so adjusted upon the lever 14 that the specific gravity of the valve-body 6 and the attached parts will be less than that of water, so that the valve will float on the water and permit the water to flow freely between the valve and its seat. As soon as the water has been drained from the receptacle and when a lighter fluid begins to flow the specific gravity of the valve being heavier than that of the lighter fluid the valve will sink to its seat and stop the flowing of such lighter fluid.

If the pressure of the liquid flowing from receptacle 24 were always equal and if the fluids were always of the same specific gravity, the weight 17 could remain stationary or be in fixed position on the lever 14; but as the quantity of water and of oil in the tank will determine the pressure upon the bottom of the valve 10 the weight is made adjustable, so as to regulate the weight of the valve to meet the variations of pressure in the tank and for the further purpose of rendering the valve applicable to the drainage of tanks containing liquids of other specific gravities than water and oil. The scale 21 and pointer 22 are provided for the purpose of showing to what extent the fluid is flowing through the valve and for indicating when the flow of heavier liquid has ceased and the valve is closed, and the numbers on the lever 14 beneath the notches on the top edge of the same serve to indicate points at which the weight should rest to provide for various heights of the fluid in the receptacle, it being understood, of course, that the adjustment of the weight on the lever 14 need only be made to meet variations of considerable extent in the quantity of liquid in the tank or receptacle 24.

When the oil begins to flow through the valve and the valve-body 6 is raised by the oil, the conical top of the valvebody will be forced into a seat 5, and this will prevent the escape of oil around the stem of the valve.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a self-closing valve for draining liquids of different specific gravities, the combination with a casing, of a buoyant valve arranged in the casing, a valve-stem projecting through the top of the casing, a lever pivotally supported upon the casing and pivotal] y attached to the valve-stem, a slotted bracket through which said lever passes, and a movable weight arranged on the free end of said lever.

2. In a self-closing valve for draining liquids of different specific gravities, the combination with a casing, a hollow bushing screwing into the top of the casing, a hollow buoyant valve arranged in the casing, a stem carried by said valve and ribs on the outside of the stem, oi a cap screwing on said bushing, a lever pivoted on said cap and pivotally attached to said stem, and a movable weight arranged on said lever.

3. Inaself-closing valve fordrainingliquids of diiferent specific gravities, the combination with acasing, a buoyant valve arranged in said casing, a stern carrying said valve and extending through the top of the casing, a lever pivotally attached to a standard carried by the casing and attached to said stein, a vertical bracket having a slot through which said lever projects, a pointer carried by said lever, a scale on said bracket adjacent to the slot therein, a lever having consecutively -numbered notches on its upper end, and a movable weight adjustably mounted on said lever.

In testimony whereof I affix my signature in the presence f two witnesses.

NAPOLEON WI'IITE. Witnesses:

F. A. REID, H. R. WINKLE. 

